bench: add another async handle benchmark

test/benchmark-async-pummel.c

@@ -0,0 +1,69 @@
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "task.h"
+#include "uv.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define NUM_PINGS (1000 * 1000)
+
+static unsigned int callbacks;
+static volatile int done;
+
+
+static void async_cb(uv_async_t* handle, int status) {
+  if (++callbacks == NUM_PINGS)
+    uv_close((uv_handle_t*) handle, NULL);
+}
+
+
+static void pummel(void* arg) {
+  while (!done)
+    uv_async_send((uv_async_t*) arg);
+}
+
+
+BENCHMARK_IMPL(async_pummel) {
+  uv_async_t handle;
+  uv_thread_t tid;
+  uint64_t time;
+
+  ASSERT(0 == uv_async_init(uv_default_loop(), &handle, async_cb));
+  ASSERT(0 == uv_thread_create(&tid, pummel, &handle));
+
+  time = uv_hrtime();
+
+  ASSERT(0 == uv_run(uv_default_loop()));
+
+  time = uv_hrtime() - time;
+  done = 1;
+
+  ASSERT(0 == uv_thread_join(&tid));
+
+  printf("%s callbacks in %.2f seconds (%s/sec)\n",
+         fmt(callbacks),
+         time / 1e9,
+         fmt(callbacks / (time / 1e9)));
+
+  return 0;
+}

test/benchmark-list.h

@@ -49,6 +49,7 @@ BENCHMARK_DECLARE (async1)
 BENCHMARK_DECLARE (async2)
 BENCHMARK_DECLARE (async4)
 BENCHMARK_DECLARE (async8)
+BENCHMARK_DECLARE (async_pummel)
 BENCHMARK_DECLARE (spawn)
 BENCHMARK_DECLARE (thread_create)
 BENCHMARK_DECLARE (million_timers)
@@ -116,6 +117,7 @@ TASK_LIST_START
   BENCHMARK_ENTRY  (async2)
   BENCHMARK_ENTRY  (async4)
   BENCHMARK_ENTRY  (async8)
+  BENCHMARK_ENTRY  (async_pummel)
 
   BENCHMARK_ENTRY  (spawn)
   BENCHMARK_ENTRY  (thread_create)

uv.gyp

@@ -405,6 +405,7 @@
       'sources': [
         'test/benchmark-ares.c',
         'test/benchmark-async.c',
+        'test/benchmark-async-pummel.c',
         'test/benchmark-fs-stat.c',
         'test/benchmark-getaddrinfo.c',
         'test/benchmark-list.h',